Heater.



0. H. HOOK.

HEATER;

APPLICATION FILED NOV. 9, 1908.

Patented Apr. 20, 1909.

CHARLES HOWARD HOOK, OF PITTSBURG, PENNSYLVANIA.

HE ATER.

Specification of Letters Patent.

' Patented April 20, 1909.

Application filed November 9, 1908. Serial No. 461,638.

To all whom it may concern:

Be it known that I, CHARLES HOWARD Hoon, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful I1nprovements in Heaters, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to improvements in heating apparatus, and has particular re-- lation to the construction of the furnace or boiler portion of the apparatus.

The principal object of the invention is to provide a construction in which the heating means is built up of a plurality of units, each of which is unitary in construction, and each including a portion of a conduit wall for the products of combustion, the assembling of a plurality of units providing, with end closures, a complete furnace or boiler structure having such conduit wall as a substantial part of the complete apparatus.

A further object of the invention is to provide a heating apparatus in which a wall of the conduit for the products of combustion is of crenelated contour, to produce a maximum heating surface.

A further object is to provide a combus-v tion chamber having its roof contour of the form of a plurality of intersecting domes.

With the above and other objects in View which will more readily appear as the invention is better understood, the same consists in the novel construction, combination and arrangement of parts to be presently described and then specifically pointed out in the appended claims. I

In the drawings, Figure l is a perspective view of a plurality of adjoining furnace sections or units, Fig. 2 is a vertical longitudinal sectional view of two of the sections or units, Fig. 3 is a front elevation of one of the sections or unitsof the furnace, Fig. 4 is a vertical transverse sectional view of the same, and Fig. 5 is a horizontal sectional view of two of the units or sections.

While the present invention pertains generally to heatingapparatus, it relates more particularly to that portion of such apparatus which serves to develop the heat units of the apparatus, viz.: the means by which the heat is communicated to the heating agent of the apparatus (water) to provide for either hot water or steam heat, and so far as the general construction of conduit wall is concerned, the particular type of apparatus is not material, since the same may be used in connection with a steam or hot water heating plant or in connection with a steam-producing boiler; and under certain circumstances could be used in connection with the hot air type of apparatus. The present invention provides two distinct features, viz.: the forming of the heater (furnace or boiler) of a plurality of independent units connected together, each 'unit havingla configuration corresponding to the configuration of a cross-section of the 1nain portion of the heater, the second feature, being the particular form or contour of a wall of the conduit for the products of combustion such as the roof of a com bustion-chamber. The description of the first of these features will be mainly a description of one of the units, it being understood that the complete heater comprises a plurality of these units connected together and having suitable end-closures; the particular form of grate mechanism used in connection therewith is not shown.

Each unit is preferably formed of an outer wall 1, conforming in contour to the contour of the heater and which in the present instance is shown as of inverted U- shape, and an inner wall 2, having a somewhat similar contour to the wall 1 but being of less height, these walls being connected together at a point below the arch or roof-portion of the wall 2, by webs 3, the arrangement being such as to provide a space l between the two walls within which the water is located when the heater is in use.

The units or sections are joined together by tie-rods 5 passing through inwardly-projecting lugs 6 carried by the wall 2 at a point approximate the lower plane of the units, the end-closures (not shown) being of suitable form and arranged to be tied to the units by the'rods 5 in an obvious manner.

When the sections or units are thus assembled, the wall 2 forms a positive division for providing separate water and fuel receiving compartments, viz: the water compartment 4: and combustion chamber l", the parts obviously having a permanent relation one to the other by reason of the unitary structure of the walls 1 and 2 connected by the webs 8. And inasmuch as the connecting members (tie rods 5) are located entirely within the combustion chamber, the

water compartment is entirely free from any projections or obstructions which would serve to effect a maximum circulation of the water Within the compartment a.

The second feature resides more particularly in the shape of the wall 2, and while this wall of each of the units is, in the present instance, formed to produce the complete conduit-wall for the products of combustion, the fact that such wall is formed of a plurality of sections does not aifect the general idea of this feature, it being understood that the same may be provided by making a unit to include tl e configuration of two or more of the sections shown, thereby increasing the width of the unit without affecting the general configuration of the wall.

To produce the particular form of wall 2, this wall is formed as shown in Fig. 5, being somewhat ll-shaped in crosssection, the apex at the meeting point of the each unit (where the latter includes but one apex, as in the drawing) being approximately central of the width of the wall. This general configuration is continued throughout the length of the wall, the depression of the wall, however, being more pronounced in the arch portion than in the vertical portion.

The arch portion of the wall or cupped in the direction of shown in Fig. 4;,

2 is scalloped its length, as and each scallop is continued to the edge of the wall, as shown in F 1g. 2, the contour of the laterally-extend ing portion of the scallop being rounded compared with the flat plane of the inclines of the vertical portion of the wall, the construction being such that when two units are connected together a series of scallops will be formed having their directions of length extending at direct right angles to the directions of length of the scallops formed on the apex heretofore referred to. In other words, I provide, when the units are connected, series of dome-shaped concavities within the wall the outer edges of which are scalloped so as to permit of ready passage of the products of combustion from one to the other and giving the effect of a plurality of intersecting domes none of which forms an obstruction against such passage of the products of combustion.

As the material of the wall 2 is of substantially-equal thickness throughout, it will be understood that the opposite face of the wall 2 (that within the water compartment) is of similar configuration, the wall of the concavities, however, presenting the form of projections. But on both faces of the wall inclines of ducts of combustion.

In appearance, the arched portion of the wall 2 is that of a crenelated or groined arch, the impost of the arch being represented by the vertical portions of the wall. find on" 1g to the use of units of similar configuration, the domes formed in the arched portion are in longitudinal and trans verse alinement.

it will be understood, of course, that the heater can be made of any number of sections or units and suitably connected together, the end units of the heater being closed and provided with suitable connections for the heating agent.

Having now described my invention, what I claim as new, is

1. In a heating apparatus, a conduit for products of combustion having a wall crenelled in contour transversely and longitudinally.

2. In a heating apparatus, a conduit for products of combustion having a wall formed of intersecting domes.

3. In a heating apparatus, a conduit for products of combustion having a wall formed of intersecting domes arranged in longitudinal and transverse alinement.

In a heating apparatus, a heater formed of a plurality of units or sections arranged side by side and communicating with each other, said sections forming the opposing walls of a water-compartment, each of said walls having an arched portion, one of said walls having its arch portion crenelated in contour transversely and longitudinally.

A heater having the roof of its cornbustion chamber crenelated in contour transversely and longitudinally.

6. A heater comprising a plurality of sections or units formed to combinedly produce a roof for the combustion chamber conforming in contour to a plurality of intersecting domes.

7. A heater comprising a plurality of sections or units formed to combinedly produce a roof for the combustion chamber conforming in contour to a plurality of intersecting domes arranged in. longitudinal and transverse alinement.

8. A. sectional unit in heating apparatus con'iprising an inner and an outer wall, said inner wall being V-shape in cross section throughout its length, the depression being of greater depth at an intermediate portion of the length.

9. A sectional unit in heating apparatus comprising an inner and an outer wall, said inner wall being V -shape in cross section throughout its length, and being scalloped in the direction of its length, said scalloped portion being of less length than the length of the inner wall.

10. A sectional unit in heating apparatus, comprising an inner and an outer wall, said inner wall being V -shape in cross section throughout its length, and being scalloped along the apex of the wall at an intermediate portion of the length of the wall.

11. A sectional unit in heating apparatus, comprising an inner and an outer wall, said inner wall being V hape in cross section throughout its length, and being scalloped along the apex of the wall and on opposite sides of such apex, at an intermediate portion of the length of the wall.

12. A sectional unit in heating apparatus, comprising an inner and an outer wall, said inner wall having an intermediate portion of its length scalloped longitudinally and trafisversely of the direction of length of the wa V 13. In a heating apparatus, a plurality of sections or units arranged side by side and communicating with each other, each of said sections having an inner arched wall V- shaped in cross-section and formed with a plurality of intersecting domes corresponding to a crenelated or groined arch.

14. In a heating apparatus, a plurality of sections or units adapted to be joined together, each section having an outer wall and an inner wall, the inner walls of the joined sections forming the roof of the coinbustion-chamber, said roof corresponding in formation to an arch crenelled transversely and longitudinally.

In testimony whereof I affix my in the presence of two witnesses.

CHARLES HOWARD HOOK.

Witnesses:

Max H. SnoLovrrz, A. J. TRIGG.

signature 

